Old Farm Tractor Antique Cushion Case - Decorative Square Throw Cushion Pillow Case Pillow Shell Pillowcase - 18x18 Inches New Pillow Case 18x18 Inches, Print one side. This cushion cover has an invisible zipper. Made of polyester fabric. Hipster design makes the pillowcase fantastic decor. A great pillowcase to make you have sweet dreams everyday.